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  • Title: A human hybrid hybridoma.
    Author: Tiebout RF, van Boxtel-Oosterhof F, Stricker EA, Zeijlemaker WP.
    Journal: J Immunol; 1987 Nov 15; 139(10):3402-5. PubMed ID: 3119707.
    Abstract:
    Hybrid hybridomas are obtained by fusion of two cells, each producing its own antibody. Several authors have reported the construction of murine hybrid hybridomas with the aim to obtain bispecific monoclonal antibodies. We have investigated, in a model system, the feasibility of constructing a human hybrid hybridoma. We fused two monoclonal cell lines: an ouabain-sensitive and azaserine/hypoxanthine-resistant Epstein-Barr virus-transformed human cell line that produces an IgG1 kappa antibody directed against tetanus toxoid and an azaserine/hypoxanthine-sensitive and ouabain-resistant human-mouse xenohybrid cell line that produces a human IgG1 lambda antibody directed against hepatitis-B surface antigen. Hybrid hybridoma cells were selected in culture medium containing azaserine/hypoxanthine and ouabain. The hybrid nature of the secreted antibodies was analyzed by means of two antigen-specific immunoassays. Our results show that it is possible, with the combined use of transformation and xenohybridization techniques, to construct human hybrid hybridomas that produce bispecific antibodies.
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